Two new compounds, [Ni（en）2]{[Ni（en）2]2[Mo^Ⅵ 6Mo^V2^Ⅳ8O40（SiO4）]}[（NH2）2（C2H4）2NH]·2H2O（1） and [Ni（en）2] { [Ni（en）2]2[Mo^Ⅵ5Mo^V3^Ⅳ8O40（VO4）] } （en）·H2O（2）（en=ethylenediamine）, hav...Two new compounds, [Ni（en）2]{[Ni（en）2]2[Mo^Ⅵ 6Mo^V2^Ⅳ8O40（SiO4）]}[（NH2）2（C2H4）2NH]·2H2O（1） and [Ni（en）2] { [Ni（en）2]2[Mo^Ⅵ5Mo^V3^Ⅳ8O40（VO4）] } （en）·H2O（2）（en=ethylenediamine）, have been hydrothermally synthesized and characterized by elemental analysis, infrared（IR）, X-ray photoelectron spectroscopy（XPS）, electron spin-resonance（ESR） and thermogravimetric（TG） analysis and single-crystal X-ray diffraction（XRD） analysis, Both the compounds exhibit a 1D chain composed of bi-supporting tetra-capped Keggin clusters and nickle coordination fragments. The ID chains are further assembled into a 3D supramolecular network with different packing modes via hydrogen bonds. The magnetic susceptibiltiy of compound 1 demonstrates the presence of antiferromagnetic interactions.展开更多
A novel compound [H_2Mo_ 5.5V_ 10.5O_ 40(PO_4)][Cu(en)_2]_4·7H_2O(1) was synthesized from V_2O_5, MoO_3, CuCl_2·2H_2O, en, H_3PO4 and H_2O in an aqueous solution via the hydrothermal method and characteri...A novel compound [H_2Mo_ 5.5V_ 10.5O_ 40(PO_4)][Cu(en)_2]_4·7H_2O(1) was synthesized from V_2O_5, MoO_3, CuCl_2·2H_2O, en, H_3PO4 and H_2O in an aqueous solution via the hydrothermal method and characterized by means of single-crystal X-ray diffraction, elemental analyses, IR, EPR spectra and thermal analyses. C_ 16H_ 80Cu_4Mo_ 5.5N_ 16O_ 51PV_ 10.5 crystallized in a triclinic system, the space group is P1 with M=2660.63, a= 1.283590(10) nm, b=1.289910(10) nm, c=1.387870(10) nm, V=1.80942(2) nm 3, Z=2, D_x=4.883 g/cm 3, F(000)=2599, μ=6.956 mm -1, (Δ/σ)=0.000, S=1.089. The crystal structure was solved by the direct methods with the final R=0.0752 and wR=0.1988 for 6311 observed reflections with I≥2σ(I). The X-ray crystallography reveals that compound 1 is a novel two-dimensional framework material constructed from the mixed Mo/V polyoxometalate and coordination groups.展开更多
Two novel complexes based on 2-aminopyridine and polyoxometalates （POMs） formulated as （C5H7N2）6- [PMo11^ⅤMo^ⅥO40（V^ⅥO）4]·H2O （1） and （C5H7N2）16[P2W18O61.5]2 （2） were hydrothermally synthesized and...Two novel complexes based on 2-aminopyridine and polyoxometalates （POMs） formulated as （C5H7N2）6- [PMo11^ⅤMo^ⅥO40（V^ⅥO）4]·H2O （1） and （C5H7N2）16[P2W18O61.5]2 （2） were hydrothermally synthesized and structurally characterized by elemental analysis, ICP, IR, UV-Vis, TG, ESR and single crystal X-ray diffraction methods. Complex 1 consists of a novel tetra-capped Keggin POMs, [PMo11^ⅤMo^ⅥO40（V^ⅣO）4]^6-, in which four [V^ⅣO5] square pyramids cap the equatorial positions of Keggin core [PMo11^ⅤMo^ⅥO40]^14-, linked together with six protohated 2-aminopyridine via hydrogen bonding interactions. Dawson and lacunary Dawson POMs, [P2W18O62]^6- and [P2W17O61]^10- coexist in complex 2, they link together with sixteen protonated 2-aminopyridine via hydrogen bonding interactions. Complex 2 exhibits photochromic property.展开更多
基金Supported by the National Natural Science Foundation of China（No.20771030） and the Natural Science Foundation of Jilin Province, China（No.201215173）.
文摘Two new compounds, [Ni（en）2]{[Ni（en）2]2[Mo^Ⅵ 6Mo^V2^Ⅳ8O40（SiO4）]}[（NH2）2（C2H4）2NH]·2H2O（1） and [Ni（en）2] { [Ni（en）2]2[Mo^Ⅵ5Mo^V3^Ⅳ8O40（VO4）] } （en）·H2O（2）（en=ethylenediamine）, have been hydrothermally synthesized and characterized by elemental analysis, infrared（IR）, X-ray photoelectron spectroscopy（XPS）, electron spin-resonance（ESR） and thermogravimetric（TG） analysis and single-crystal X-ray diffraction（XRD） analysis, Both the compounds exhibit a 1D chain composed of bi-supporting tetra-capped Keggin clusters and nickle coordination fragments. The ID chains are further assembled into a 3D supramolecular network with different packing modes via hydrogen bonds. The magnetic susceptibiltiy of compound 1 demonstrates the presence of antiferromagnetic interactions.
文摘A novel compound [H_2Mo_ 5.5V_ 10.5O_ 40(PO_4)][Cu(en)_2]_4·7H_2O(1) was synthesized from V_2O_5, MoO_3, CuCl_2·2H_2O, en, H_3PO4 and H_2O in an aqueous solution via the hydrothermal method and characterized by means of single-crystal X-ray diffraction, elemental analyses, IR, EPR spectra and thermal analyses. C_ 16H_ 80Cu_4Mo_ 5.5N_ 16O_ 51PV_ 10.5 crystallized in a triclinic system, the space group is P1 with M=2660.63, a= 1.283590(10) nm, b=1.289910(10) nm, c=1.387870(10) nm, V=1.80942(2) nm 3, Z=2, D_x=4.883 g/cm 3, F(000)=2599, μ=6.956 mm -1, (Δ/σ)=0.000, S=1.089. The crystal structure was solved by the direct methods with the final R=0.0752 and wR=0.1988 for 6311 observed reflections with I≥2σ(I). The X-ray crystallography reveals that compound 1 is a novel two-dimensional framework material constructed from the mixed Mo/V polyoxometalate and coordination groups.
基金Project supported by the National Natural Science Foundation of China （Nos. 20271007. 20331010 and 90406002） and the Specialized Research Fund for the Doctoral Program of Higher Education of China （No. 20030007014）. Dedicated to Professor Xikui Jiang on the occasion of his 80th birthday.
文摘Two novel complexes based on 2-aminopyridine and polyoxometalates （POMs） formulated as （C5H7N2）6- [PMo11^ⅤMo^ⅥO40（V^ⅥO）4]·H2O （1） and （C5H7N2）16[P2W18O61.5]2 （2） were hydrothermally synthesized and structurally characterized by elemental analysis, ICP, IR, UV-Vis, TG, ESR and single crystal X-ray diffraction methods. Complex 1 consists of a novel tetra-capped Keggin POMs, [PMo11^ⅤMo^ⅥO40（V^ⅣO）4]^6-, in which four [V^ⅣO5] square pyramids cap the equatorial positions of Keggin core [PMo11^ⅤMo^ⅥO40]^14-, linked together with six protohated 2-aminopyridine via hydrogen bonding interactions. Dawson and lacunary Dawson POMs, [P2W18O62]^6- and [P2W17O61]^10- coexist in complex 2, they link together with sixteen protonated 2-aminopyridine via hydrogen bonding interactions. Complex 2 exhibits photochromic property.
